Problem dualbooting with xp pro on 2 hard drives

I have 2 hard drives and want to put xp pro on both so that I can set up one hard drive for the kids and one for the wife and mayself so that the kids cannot access our files.I am having problems getting xp pro on the second drive useing partition magic, windows keeps saying the partition I am trying to load it on is not an xp compatible partition. Has anuone come across a similar problem and if so so how did they fix it.Thanks in advance for any replies

Yoda I have tried that thanks and it did not work,I have also tried crx suggestion again to no avail.I have now set up the second disc as master and loaded XP pro on that it now works with bothy discs connected and using boot magic, however when I choose the second drive it comes up with the message that it is setting up the second drive but nothing happens. If you then press any key windows loads on from the second disc.any suggestions please.